JPS60104756A - Fuel evaporation preventer - Google Patents

Abstract

PURPOSE:To achieve rational fixing in an automatic bicycle having limited space, by providing a plurality of evaporated fuel containers for temporarily storing evaporated fuel in a fuel tank then coupling them in series. CONSTITUTION:A fuel evaporation preventer is provided with two evaporated fuel absorbers 1, 1a having same structure where adsorbing layers 4 composed of active carbon are provided in the containers 3. One adsorber 1 has a charging hole 3a coupled through a conduit 5 to the inner upper portion of fuel tank 2 and a purge hole 3b coupled through conduit 7, purge cut valve 8 and conduits 9, 9a to the carburetor 10. The other adsorber 1a has a purge hole 3b coupled through a conduit 13 to the atmospheric hole 3d and a drain hole 3c coupled through conduit 16 and T-joint 17 to a conduit 14 coupled through a check valve 15 to the drain hole 3c of adsorber 1.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to
This invention relates to a fuel evaporation prevention device that prevents fuel from being released into the public.

If the fuel tank is a closed type, the internal pressure of the fuel tank will change due to temperature changes and fuel consumption, making it impossible to suck out the fuel, or conversely, excess fuel may be stored. In order to avoid the inconvenience of extrusion, it is necessary to maintain the pressure of the fuel tank at the same level.

In this case, if the inside of the fuel tank is simply opened to the atmosphere, evaporated fuel will be wasted into the atmosphere, which is a waste.

For this reason, a fuel evaporation prevention device is generally installed in order to maintain the pressure in the fuel tank at the same pressure as the atmosphere without releasing the evaporative combustion gases generated in the fuel tank.

Conventionally, there are few known devices that use such a fuel evaporation prevention device and an evaporated fuel storage device that stores and obtains evaporated fuel by adsorbing the evaporated fuel generated in the fuel tank into active JjJ. ,ing. It has a structure in which an activated carbon layer is provided inside the container having the vaporized fuel storage device, and the internal volume of the container is proportional to the internal volume of the fuel tank.

The evaporative fuel storage device has a capacity for people in proportion to the internal volume of the fuel tank. In this case, it would be extremely difficult to install one large evaporative fuel storage device into a motorcycle, since it would require 1" space.

To this, 5 small 1, : to (a fuel storage) 1: ( can be connected in parallel, individually from the separator of the fuel: I"l tank.

However, like 1 and 2, +V several evaporative fuels +1 storage l! : (If they are connected in parallel, when the motorcycle falls down, the flame will ignite when the motorcycle falls over). Each;':□':
5C')7. 8 stone yield 11K) (H steam j1 prevention 11
There is a problem that the function may be impaired.

Ki Komei was 1 record 1 (because it was considered as 1 in compassion, it was automatic)
In cases where the mounting space for the two wheels 11 is limited, there is a Japanese melon in the arrangement of the combustion pick-up IjX device, which corresponds to the circle 71'1, and the capacity Although a plurality of small evaporators are used, a single evaporator whose volume is the same as the sum of the volumes of the storage vessels is used. , y5K
: It has the same evaporation prevention function as that of other vehicles, and prevents evaporative combustion of 1" and 1" when riding a motorcycle, etc.
゛1 collection 1t:'j, +"+:4 also aims to prevent X1q Sanboichi performance from becoming Ill.
In order to achieve the objective 1, a plurality of evaporative fuel storage units having the same structure as each other are provided to temporarily store evaporative fuel flk generated in the fuel tank, and a first evaporative fuel storage unit is provided. H;
Connect the charge hole of the first evaporative fuel storage device to the inside of the fuel tank and seal the charge hole of the other evaporative fuel storage device 5, connect the barge hole of the first evaporative fuel storage device to the cuff Connect the barge holes of the combustor 1 storage device to the atmospheric holes of the first evaporative fuel storage device, and connect them to the drain holes of the 1st evaporative combustion storage device 8;9. , a fuel evaporation prevention device characterized in that a check valve 1 is interposed to prevent atmospheric air from flowing into the first 7)j%χ combustion storage device from the drain hole; It is possible to try to provide the following information.

Please see below for an example of the present invention! ((
I will explain in L. IP+ is f(i l”l) of the present invention
r4-＼Defeat prevention device] σ [This is the overall configuration diagram. In the figure, 1 and 1 are evaporative fuel storage devices that store evaporative fuel generated in the fuel tank 2. 1. Are these evaporative fuel storage containers 1, 1a the same as each other? l'), Let's explain the first evaporative fuel storage container 1, and explain the other evaporative fuel storage containers 1 and 1a. ! :+ I For Hl, the same parts in one drawing are given the same reference numerals as A and J, and the structural description thereof will be omitted. First evaporative fuel storage! ! ! +I is an inlet made of activated carbon that adsorbs evaporated fuel into the inside of the inlet. 4 were installed (IS7 construction, the container: 3
3A and purge hole 31J on the 10th side.

On the 1+1 side, there is a 1-ren conversion 3c and a popular 1'L:3d, respectively.

The first fish '5Q Jl (l: fl The charge hole 3a of the storage device 1 is the pipe y1) 5 and the inside 1 of the tank 2
Connect to one side.

This is 8; other='r:i 30 light i 1'l storage i! ! r I ;+ (/,) Chi A">'4.3,
I is Ki A Nobu (sealed with sea urchin, Teahe),.

The first (71, %: i IJQ, 4HH7H collection f!: + I noversi rL: l b Ha tube 17117
Connected to 7U barge cutlet 1 to t8 via ;, ', L,
), the valve 8 to the barge 1 is the pipe 9, ! ]
A is connected to the A-Fleta 10, and the A-F (Ivy 10 is connected to the C-Engine 12 via the pipe ffi II).

nK When starting the engine 12 with 1 to 8 valves, Q', ? ' kli 7 is popularly communicated and the first one (・
1t to 11 carburetor lO (1 Id-IF"1"
EG II) 1, other evaporative fuel storage device] Verge hole of a: 31) is pipe + Ileg +
3, the first steam J and the fuel '1 collection A rough R1'
It is connected to the inlet 71°3d of l.

The first evaporative combustion O'+1 collection 5M:! A jφ stop valve 15 is interposed in the pipe line 14 connected to the drain hole 3c of '+i I, and the check valve 15 allows the first evaporative combustion fuel to flow from the drain hole 3C to the drain hole 3c. Air inflow into 1 is t
ill , +I- done. The other evaporated fuel A' 31 is connected to the check valve 1 through the drain hole 3c of the storage device 1a and the river soil pipe 1fi.
It is connected to the 'IK path 14 on the downstream side of No.
It is interposed in the pipe KfSL 9 connected to the carburetor 10.

Both vaporized fuel storage containers1. Ia, Versica, valves 1 to 8 and the check valve 15 are installed at predetermined locations of the fairing stay 20 as shown in FIGS. Storage i!l: I is its capacity (
:(The side plate 20 has 1-2 brackets installed on the outer surface of 3 on the - side of the fairing stay 20.)
- It is removed using screw 22 (not shown). Other evaporative fuel storage) i: + I; l is its capacity II
'S: Remove the brackets I-21 provided on the outer surface of the bracket 11 using the screws 22 on the bracket 1-23.24 of the side plate 2 ('l l) on the other side of the link stay 20 (=J
4, the barge cut valve 8 is connected to the fair link stay 2.
0 (7) - 倶11 2 (The handle f provided inside 1a,
Remove the upper part of the I bank 25 [S fixed pan 1 to 26]: ,,, take it off (・1 piece).

Appropriate? 15 is the lower part of the fairing chair 20 - side 2
(1) It is attached by attaching it to the annular receiver 27 provided approximately in the middle of the plate.

As mentioned above, evaporated 4゛1 4'A t! ÷1. Ia, purge cut valve 8. and j "take α stop i15(, J(
1 Fair links stay 2 (l l:j White as shown in Figure 11) Preventing a crashed car ]x'
j' ring 28 or A, 1 digit.

1. Vaporization with 1 stone collection vapour. Ia is the left/i both inner surfaces of the fair 11 ring 28 [min.

io5, [, (("4) The function of the fuel front 11 prevention device of the present invention will be explained...The evaporative combustion generated inside the fuel tank 2 is discharged into the pipe 5. Through the 11 charge hole: 1 through the 1st I; combustion yield]] 1°C 8!iS 1 is adsorbed on the adsorption layer 11 inside.

Further, the evaporative fuel that could not be absorbed into the first evaporative fuel storage 8:)1 is absorbed into the first evaporative fuel storage 1! i';
The fuel passes through the pipe 1.1 from the inlet hole 3d of I, and is adsorbed to the adsorption layer/1 in another evaporated fuel storage device 1.1 through the -1C barge hole 3b. In this application, the first evaporated fuel storage H); pipe connected to the drain hole 3c of 1] /l is reversed Jl: 'if
By inserting 'I5, 1~len hole'J t
, because it is not directly popular, the first evaporative combustion fuel ゛1 collection? ! There is no possibility that a part of the excess evaporative fuel fj+ in the HI will be released into the atmosphere from the drain hole 3c of the first evaporative fuel storage device 1.
．． 3, and other evaporation syndromes are reliably adsorbed and stored in the stored IBIa.

Also, when barging, other evaporative fuels are stored! The evaporated soybean adsorbed and stored in the barge hole 3b flows into the first evaporated fuel storage device l through the air hole 3 (1) through the barge hole 3b and pipe 13. The first evaporation, the layer '1 storage vessel 1
It is addressed to the swallow that is absorbed and stored inside (1. The first one is purge hole 3b.
Passing through the tube ν37, the verge cut l-]t, the tube V
It flows into the carburetor lO via 89°9a.

In the second case as well, a reverse JL valve 15 is interposed in the channel 14 of the drain hole 3 of the first M combustion 1'l storage device 1.

1; Stop the popular inflow from L/N hole 2c, and store other evaporated fuel: ij+l H+ popular hole 3d
The 3rd hole is made popular, and there are 2. Again, this ((11 evaporation ya (stored in January)!!) I a fish Q i!: '+'i'l's barge effect jh is in the direction'', -
do.

Furthermore, the 10th Tsubame fuel storage iH'i I's ChiA---
P ('fQ ai PI collection
°IK :::+ I '&'11' L Te 1
1) ri 2 Inner contact tea L, is in a state of 1) wide 11 9 o'clock of 7 J
? λ4' 1 year old "1 sink; 2 inside σ effect 1 person needle:
, il flows into the first fish 50 fuel storage tank i, or the swallow of the pond is completely burned out! ! ! + Since almost no flow into Ia, at least the other evaporative combustion 71 stored H:
:Ia's 110 function of preventing outbreaks is irresistible.

In addition, the first z・x ignition I''1 collection R1!: F+ and other evaporative combustion 1''1 storage! ! ) When liquid fuel flows into I *, the liquid fuel 'I flows through the engine hole: 3c, pipe Vfi1.4. The IC, IL stop valve 15 and the 1-shaped joints 1 to 17 are quickly turned off to restore the transpiration prevention function.

In the present invention, the number of evaporative fuel storage devices is not limited to two, but more than 2 full'll1. It is good if the evaporative fuel yield is 11 Q+! (＞
The construction of I + I jl is not limited to the above-mentioned embodiments.

In addition, evaporative fuel containment device 1. Ir+, purge valves 1 to 8, and check valve 15 are mounted on the motorcycle body using the fairing stay 20. However, this is not limited to this, and if the fairing 28 is not installed, the upper controller may be attached directly to the vehicle body without using the printer stay 20: It is something to do. , I intend to make various changes/changes to other features than those mentioned above without departing from the gist of this document.

Fuel vapor of the present invention 119. Defense 11 device N”i
o(l, evaporative fuel fl generated in the fuel tank is ・11
? (Storage) Multiple evaporative fuel storages with the same structure:
1: Connect the chassis hole of the second & bald fuel collector to the inside of the fuel tank and connect the other evaporative fuel 4
The purge hole of the first evaporative fuel storage 81; Connect the vertical holes of the first evaporative storage device to the atmospheric holes of the first evaporative storage device, respectively, and connect the first evaporative storage device to the 1st to 3rd holes of the first evaporative storage device.
(The first evaporative fuel storage) (:(The first evaporative fuel storage) is characterized by having various valves that prevent atmospheric air from flowing into the first evaporative fuel storage. A
＞I can be made smaller with just one small finger, and in cases where space is limited for several lines such as motorcycles, it is possible to make the evaporative combustion gas Hakusan] Ryo can respond to yen 7 + 'j. Also, using Yong 1j, small plural swallow 3C light + 'M collection c:)::? Although it is +, these tU numbers, +A to 31 yield N
15 pieces of fish with the same volume as the volume of i+ 141
Collection high i); Renhi same 1.7:・-11'! 1 which has a prevention function, and further has an IJ number f1. ', I's evaporation disease 1', 11
[I-taku: (iCi is connected to the crab in series and has a 2-sided shape f
Because it is at 81, the automatic wheel rotates at 11℃ (J when turning 1゛;
Then, liquid fuel';1 flows only into the first evaporated fuel, 11° [H;), and the evaporated fuel is stored in the pond;1:;
There is almost no inflow I-1, so liquid' (13 fuel or inflow %
1. No reduction in transpiration prevention function caused by I'rod. It may be possible to store a small amount of fuel for Kaoru! ! :: Only need to be used and stored, small capacity and quick to use.

7゛) Storage ■: (Since there is no need to use or G, mass production is improved and costs can be reduced easily, etc.).

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and the first figure shows the overall configuration of the fuel evaporation prevention device. Tank, both evaporated fuel storage devices, purge cap 1-)? , jφ stop?
,'1゛1゛Join 1- and the direction Y perspective view of the container y) 1, Fig. 3 shows the double evaporated fuel storage 8:), purge cut valve and check puller r in the fair link stay. FIG. 4 is a partially cutaway perspective view of a motorcycle equipped with a fuel evaporation prevention device. ro3゜1...first evaporative fuel storage 1! ), ld... ignite the other 7 1'l lx K&'A'; , 2- - ignite 1 tank, :l++= charge I'L, :+b...
・Purge hole: 3C...Tren r1. : (d... atmospheric hole, lO... ki A/b L) Evening, 15... non-return b r. Applicant Honda Giirir Kogyo (; 1, company agent patent attorney Toshihiko Seibe

Claims (1)

[Claims] 1. Temporarily stores evaporated fuel generated in the fuel tank 2. Insert multiple evaporative fuel storage devices made by the same manufacturer into one device.
Ifit, connect the charge hole of the first Swallow 5R3 fuel storage device to the inside of the fuel tank, and seal the charge hole of the other vaporized fuel storage device.2. The purge rL of the first vaporized fuel storage device is connected to the carburetor, and the purge hole of the other vaporized fuel storage device is connected to the purge rL of the first vaporized fuel storage device. Connect the IL to the air hole of
26th item 11th collection i-\) 1: (Fuel swallow scattering that prevents 1,7 times from being interposed with a check valve to prevent popular 146 people from entering) 1. "1 place.